CN107286914A - A kind of ceramic base heat accumulating based on iron tailings and preparation method thereof - Google Patents
A kind of ceramic base heat accumulating based on iron tailings and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to a kind of ceramic base heat accumulating based on iron tailings and preparation method thereof.Its technical scheme is：First iron tailings, aluminium salt, stabilizer and complexing agent are mixed, grinding obtains abrasive；The aluminium salt, inorganic salts, cobalt powder, manganese powder and germanium powder are mixed again, it is compressing, it is heat-treated, ball milling, dries under the conditions of neutral atmosphere and 400 ~ 600 DEG C, screening obtains the screening material B that granularity is less than 0.088mm for 0.088 ~ 1mm screening material A and granularity.Then 20 ~ 50wt% abrasive, 10 ~ 30wt% screening material A, 20 ~ 40wt% screening material B and 5 ~ 10wt% inorganic salts are mixed, it is compressing, it is heat-treated under the conditions of neutral atmosphere and 400 ~ 600 DEG C, produces the ceramic base heat accumulating based on iron tailings.The characteristics of present invention has wide raw material sources, low production cost and simple technique, the prepared ceramic base heat accumulating storage density based on iron tailings is big, thermal conductivity factor is big, compressive resistance is high and thermal shock resistance is high.
Description
Technical field
The invention belongs to ceramic base heat-storage technology field.Specifically related to a kind of ceramic base heat accumulating based on iron tailings and
Its preparation method.
Background technology
Heat accumulating is the current more extensive new function material of application, be mainly used in industry it is remaining/Waste Heat Recovery utilizes,
The field such as solar energy composite exploitation and high-temperature energy-conservation.Mainly include two kinds of researching of sensible heat storage material and latent heat heat accumulating.Heat accumulation material
Material belongs to researching of sensible heat storage material, using refractory material as the main body for absorbing heat, because the absorption of heat is only by resistance to
The sensible heat of fiery material holds change, and this heat accumulating has that volume is big, cost is high, thermal inertia is big and power output is gradually reduced
Shortcoming.Latent heat formula heat accumulating then utilizes suction exothermic character of the phase change medium in phase transition process, with storage density is big, volume
The advantage such as small and transition temperature range is wide, is one of focus of heat memory technology research.
It is main at present that latent heat heat accumulating is prepared using mixed-sintering method and melting method of impregnation, all come with some shortcomings.
Mixed-sintering method is to mix matrix material, phase-change material and additive etc., is molded, and sintering obtains latent heat heat accumulating.The method
Though it is relatively easy, the drain evaporation of phase-change material can be caused when sintering temperature is too high or phase-change material content is larger, so that
Reduce the heat storage performance of material.For the loss in reduction phase-change material solid, liquid transition process, there is researcher to encapsulate phase-change material
In dedicated container, but the thermal resistance of material, reduction heat transfer efficiency, raising production cost can be increased.Melting infiltration rule needs advance
Porous ceramic film material is prepared, then liquid state phase change material is infiltrated up in porous ceramics hole, is cooled down, latent heat heat accumulation material is made
Material.Though this method can avoid phase-change material drain evaporation and reduce sintering process bulk effect, need previously prepared porous
Ceramic body, the content of phase-change material depends on the pore size and its distribution of porous ceramic preforms, and not only process is more
Complexity, and cost of manufacture is high.In addition, also there is mechanical strength, thermal conductivity factor and thermal shock resistance etc. in existing heat accumulating
The problem of performance is low.
Meanwhile, with industry and rapid development of economy, the yield of natural minerals increased dramatically, with smelting iron and steel industry
Exemplified by, iron tailings-steel plant's processing barren rocks and chip, its stacking cause environmental pollution and potential safety hazard, the processing of iron tailings
Amount and processing cost more and more higher, thus caused social concern is also more and more.Existing technology is typically to use iron tailings
In brickmaking, glassware or as additive be used for other products production.But due to composition not from iron tailings, ore deposit phase and
Architectural feature is set out, thus the product developed based on iron tailings does not embody the resources advantage of this raw material.
The content of the invention
It is contemplated that overcoming the defect that prior art is present, it is therefore intended that a kind of raw material sources of offer are wide, production cost
The preparation method of the simple ceramic base heat accumulating based on iron tailings of low and technique, prepared with this method based on iron tailings
Ceramic base heat accumulating storage density is big, thermal conductivity factor is big, compressive resistance is high and thermal shock resistance is high.
To achieve the above object, the technical solution adopted by the present invention is comprised the concrete steps that：
The first step, the network by 40 ~ 60wt% iron tailings, 20 ~ 40wt% aluminium salt, 0.1 ~ 10wt% stabilizer and 10 ~ 30wt%
Mixture is mixed, and is ground 0.5 ~ 2 hour under room temperature condition, is produced abrasive.
Second step, by 20 ~ 40wt% aluminium salt, 30 ~ 50wt% inorganic salts, 10 ~ 30wt% cobalt powder, 10 ~ 30wt% manganese
Powder and 10 ~ 30wt% germanium powder are well mixed, compressing under the conditions of 50 ~ 100MPa, in neutral atmosphere and 400 ~ 600 DEG C of bars
It is heat-treated 0.5 ~ 3 hour, crushes, ball milling under part, is dried 12 hours under the conditions of 90 DEG C, screening, it is 0.088 ~ 1mm's to obtain granularity
Screening material A and granularity are less than 0.088mm screening material B.
3rd step, by 20 ~ 50wt% abrasive, 10 ~ 30wt% screening material A, 20 ~ 40wt% screening material B and 5 ~
10wt% inorganic salts are well mixed, compressing under the conditions of 10 ~ 30MPa, hot under the conditions of neutral atmosphere and 400 ~ 600 DEG C
Processing 0.5 ~ 3 hour, produces the ceramic base heat accumulating based on iron tailings.
The granularity of the iron tailings is less than 0.088mm；The iron tailings：SiO2Content is 70 ~ 80wt%, Fe2O3Content is 8
~ 15wt%, Al2O3Content is less than 3.5wt%, and CaO content is less than 4wt%.
The granularity of the aluminium salt is less than 0.045mm；The aluminium salt is Al2(SO4)3·18H2O is Al (NO3)3·9H2O,
The purity of the aluminium salt is more than 99wt%.
The granularity of the stabilizer is less than 0.01mm；The stabilizer is lanthana powder or is titanium dioxide zirconium powder, the oxygen
Change the La in lanthanum powder2O3Content is more than 99wt%, the ZrO of the titanium dioxide zirconium powder2Content is more than 99wt%.
The complexing agent is anhydrous oxalic acid or is Citric Acid Mono, and the purity of the complexing agent is more than 99wt%.
The granularity of the inorganic salts is less than 0.088mm；The inorganic salts are sodium nitrate or are potassium nitrate, the inorganic salts
Purity is more than 99wt%.
The granularity of the cobalt powder is less than 0.045mm, and the Co contents of the cobalt powder are more than 99wt%.
The granularity of the manganese powder is less than 0.088mm, and the Mn contents of the manganese powder are more than 99wt%.
The granularity of the germanium powder is less than 0.088mm, and the Ge contents of the germanium powder are more than 99wt%.
The neutral atmosphere is nitrogen atmosphere or is argon gas atmosphere.
The ball milling is：The mass ratio of An Wu Liao ︰ zirconium oxide Mo Qiu ︰ absolute ethyl alcohols is the dispensings of 1 ︰, 10 ︰ 5, is put into ball grinder
In, ball milling 12 ~ 15 hours under conditions of 200r/min.
Due to using above-mentioned technical proposal, the present invention has following good effect compared with prior art：
(1) the present invention is based on high content phase-change material, composition, formation and the distribution of control structure material, adjustment structure
The high-temperature reactivity of material and phase-change material, thus the obtained ceramic base heat accumulating based on iron tailings has larger heat accumulation
Density.
(2) the present invention realizes the micro Distribution of phase-change material using the formation feature of structural material, and control crystallite is in phase transformation material
Formation state in material adjusts the heat absorption, accumulation of heat and Heat transfer of material, thus the obtained ceramic base storage based on iron tailings
Hot material has higher thermal conductivity factor.
(3) the present invention is using the pyroreaction characteristic between different material, and formation refractoriness is high, compressive resistance is big, thermal expansion
Coefficient is low and the high matrix material of corrosion resistance, thus the obtained ceramic base heat accumulating based on iron tailings have it is higher resistance to
Compressive Strength and thermal shock resistance.
(4) the present invention controls preparation process substep, it is to avoid use high temperature according to the structure and performance characteristics of heat accumulating
The processes such as calcining, had both prevented the loss of phase-change material, the ingenious control of material structure and performance are realized again.Therefore, not only
The raw material sources used are extensive, and simple production process, production cost are low.
(5) the present invention solves the problem of accumulation is taken up an area and pollutes environment using iron tailings as one of primary raw material, not only, and
Turn waste into wealth, realize synthetical recovery and the utilization of iron tailings resource；Meanwhile, utilize the silica, oxidation contained in iron tailings
Crystalline phase distribution in iron, aluminum oxide and other beneficiating ingredients and iron tailings, it is engaged with other raw materials, in Re Chu
Form the crystal grain for the distribution that interweaves during reason, thus the obtained ceramic base heat accumulating based on iron tailings have it is higher resistance to
Compressive Strength.
Ceramic base heat accumulating based on iron tailings prepared by the present invention is after testing：Storage density is more than 800kJ/kg；Lead
Hot coefficient is more than 1.8W/ (mK)；Compressive resistance is more than 20MPa；Thermal shock resistance (1100 DEG C of water coolings)>20 times.
Therefore, the characteristics of present invention has wide raw material sources, low production cost and simple technique, it is prepared based on iron tail
The ceramic base heat accumulating storage density of ore deposit is big, thermal conductivity factor is big, compressive resistance is high and thermal shock resistance is high.
Embodiment
With reference to embodiment, the invention will be further described, not to the limitation of its protection domain.
It is first that the material Unify legislation involved by present embodiment is as follows to avoid repeating, no longer gone to live in the household of one's in-laws on getting married in embodiment
State：
The granularity of the iron tailings is less than 0.088mm；The main chemical compositions of the iron tailings are：SiO2Content be 70 ~
80wt%, Fe2O3Content is 8 ~ 15wt%, Al2O3Content is less than 3.5wt%, and CaO content is less than 4wt%.
The granularity of the aluminium salt is less than 0.045mm；The aluminium salt is Al2(SO4)3·18H2O is Al (NO3)3·9H2O,
The purity of the aluminium salt is more than 99wt%.
The granularity of the stabilizer is less than 0.01mm；The stabilizer is lanthana powder or is titanium dioxide zirconium powder, the oxygen
Change the La in lanthanum powder2O3Content is more than 99wt%, the ZrO of the titanium dioxide zirconium powder2Content is more than 99wt%.
The complexing agent is anhydrous oxalic acid or is Citric Acid Mono, and the purity of the complexing agent is more than 99wt%.
The granularity of the inorganic salts is less than 0.088mm；The inorganic salts are sodium nitrate or are potassium nitrate, the inorganic salts
Purity is more than 99wt%.
The granularity of the cobalt powder is less than 0.045mm, and the Co contents of the cobalt powder are more than 99wt%.
The granularity of the manganese powder is less than 0.088mm, and the Mn contents of the manganese powder are more than 99wt%.
The granularity of the germanium powder is less than 0.088mm, and the Ge contents of the germanium powder are more than 99wt%.
The ball milling is：The mass ratio of An Wu Liao ︰ zirconium oxide Mo Qiu ︰ absolute ethyl alcohols is the dispensings of 1 ︰, 10 ︰ 5, is put into ball grinder
In, ball milling 12 ~ 15 hours under conditions of 200r/min.
Embodiment 1
A kind of ceramic base heat accumulating based on iron tailings and preparation method thereof.The preparation method of the present embodiment is：
The first step, by 40 ~ 50wt% iron tailings, 30 ~ 40wt% Al2(SO4)3·18H2O, 0.1 ~ 1wt% lanthana powder, 10
Ground 0.5 ~ 2 hour under ~ 20wt% anhydrous oxalic acid mixing, room temperature condition, produce abrasive.
Second step, the Al (NO by 20 ~ 30wt%3)3·9H2O, 40 ~ 50wt% potassium nitrate, 10 ~ 20wt% cobalt powder, 10 ~
20wt% manganese powder and 10 ~ 20wt% germanium powder are well mixed, compressing under the conditions of 50 ~ 100MPa, in nitrogen atmosphere and 400
It is heat-treated 0.5 ~ 1 hour, crushes, ball milling under the conditions of ~ 500 DEG C, is dried 12 hours under the conditions of 90 DEG C, screening, obtaining granularity is
0.088 ~ 1mm screening material A and granularity are less than 0.088mm screening material B.
3rd step, by 20 ~ 30wt% abrasive, 20 ~ 30wt% screening material A, 30 ~ 40wt% screening material B and 5 ~
10wt% sodium nitrate is well mixed, compressing under the conditions of 10 ~ 30MPa, hot under the conditions of nitrogen atmosphere and 500 ~ 600 DEG C
Processing 1 ~ 3 hour, produces the ceramic base heat accumulating based on iron tailings.
Ceramic base heat accumulating manufactured in the present embodiment based on iron tailings is after testing：Storage density is more than 850kJ/kg；
Thermal conductivity factor is more than 1.9W/ (mK)；Compressive resistance is more than 30MPa；Thermal shock resistance (1100 DEG C of water coolings)>20 times.
Embodiment 2
A kind of ceramic base heat accumulating based on iron tailings and preparation method thereof.The preparation method of the present embodiment is：
The first step, by 45 ~ 55wt% iron tailings, 20 ~ 30wt% Al (NO3)3·9H2O, 1 ~ 5wt% titanium dioxide zirconium powder, 20 ~
Ground 0.5 ~ 2 hour under 30wt% Citric Acid Mono mixing, room temperature condition, produce abrasive.
Second step, the Al by 30 ~ 40wt%2(SO4)3·18H2O, 30 ~ 40wt% sodium nitrate, 10 ~ 20wt% cobalt powder, 10
~ 20wt% manganese powder and 10 ~ 20wt% germanium powder are well mixed, compressing under the conditions of 50 ~ 100MPa, in argon gas atmosphere and
It is heat-treated 1 ~ 3 hour, crushes, ball milling under the conditions of 500 ~ 600 DEG C, is dried 12 hours under the conditions of 90 DEG C, screening, obtaining granularity is
0.088 ~ 1mm screening material A and granularity are less than 0.088mm screening material B.
3rd step, by 30 ~ 40wt% abrasive, 20 ~ 30wt% screening material A, 20 ~ 30wt% screening material B and 5 ~
10wt% potassium nitrate is well mixed, compressing under the conditions of 10 ~ 30MPa, hot under the conditions of argon gas atmosphere and 400 ~ 500 DEG C
Processing 0.5 ~ 1 hour, produces the ceramic base heat accumulating based on iron tailings.
Ceramic base heat accumulating manufactured in the present embodiment based on iron tailings is after testing：Storage density is more than 800kJ/kg；
Thermal conductivity factor is more than 1.8W/ (mK)；Compressive resistance is more than 20MPa；Thermal shock resistance (1100 DEG C of water coolings)>20 times.
Embodiment 3
A kind of ceramic base heat accumulating based on iron tailings and preparation method thereof.The preparation method of the present embodiment is：
The first step, by 50 ~ 60wt% iron tailings, 20 ~ 30wt% Al2(SO4)3·18H2O, 5 ~ 10wt% titanium dioxide zirconium powder,
Ground 0.5 ~ 2 hour under 10 ~ 20wt% Citric Acid Mono mixing, room temperature condition, produce abrasive.
Second step, the Al by 20 ~ 30wt%2(SO4)3·18H2O, 30 ~ 40wt% sodium nitrate, 20 ~ 30wt% cobalt powder, 10
~ 20wt% manganese powder and 10 ~ 20wt% germanium powder are well mixed, compressing under the conditions of 50 ~ 100MPa, in nitrogen atmosphere and
It is heat-treated 0.5 ~ 1 hour, crushes, ball milling under the conditions of 400 ~ 500 DEG C, is dried 12 hours under the conditions of 90 DEG C, screening, obtaining granularity is
0.088 ~ 1mm screening material A and granularity are less than 0.088mm screening material B.
3rd step, by 40 ~ 50wt% abrasive, 10 ~ 20wt% screening material A, 20 ~ 30wt% screening material B and 5 ~
10wt% potassium nitrate is well mixed, compressing under the conditions of 10 ~ 30MPa, hot under the conditions of nitrogen atmosphere and 500 ~ 600 DEG C
Processing 0.5 ~ 1 hour, produces the ceramic base heat accumulating based on iron tailings.
Ceramic base heat accumulating manufactured in the present embodiment based on iron tailings is after testing：Storage density is more than 900kJ/kg；
Thermal conductivity factor is more than 2W/ (mK)；Compressive resistance is more than 30MPa；Thermal shock resistance (1100 DEG C of water coolings)>20 times.
Embodiment 4
A kind of ceramic base heat accumulating based on iron tailings and preparation method thereof.The preparation method of the present embodiment is：
The first step, by 40 ~ 50wt% iron tailings, 30 ~ 40wt% Al2(SO4)3·18H2O, 0.1 ~ 1wt% lanthana powder, 10
Ground 0.5 ~ 2 hour under ~ 20wt% anhydrous oxalic acid mixing, room temperature condition, produce abrasive.
Second step, the Al by 20 ~ 30wt%2(SO4)3·18H2O, 30 ~ 40wt% sodium nitrate, 10 ~ 20wt% cobalt powder, 20
~ 30wt% manganese powder and 10 ~ 20wt% germanium powder are well mixed, compressing under the conditions of 50 ~ 100MPa, in argon gas atmosphere and
It is heat-treated 1 ~ 3 hour, crushes, ball milling under the conditions of 500 ~ 600 DEG C, is dried 12 hours under the conditions of 90 DEG C, screening, obtaining granularity is
0.088 ~ 1mm screening material A and granularity are less than 0.088mm screening material B.
3rd step, by 30 ~ 40wt% abrasive, 20 ~ 30wt% screening material A, 20 ~ 30wt% screening material B and 5 ~
10wt% potassium nitrate is well mixed, compressing under the conditions of 10 ~ 30MPa, hot under the conditions of argon gas atmosphere and 500 ~ 600 DEG C
Processing 0.5 ~ 1 hour, produces the ceramic base heat accumulating based on iron tailings.
Ceramic base heat accumulating manufactured in the present embodiment based on iron tailings is after testing：Storage density is more than 900kJ/kg；
Thermal conductivity factor is more than 1.9W/ (mK)；Compressive resistance is more than 30MPa；Thermal shock resistance (1100 DEG C of water coolings)>20 times.
Embodiment 5
A kind of ceramic base heat accumulating based on iron tailings and preparation method thereof.The preparation method of the present embodiment is：
The first step, by 45 ~ 55wt% iron tailings, 20 ~ 30wt% Al (NO3)3·9H2O, 1 ~ 5wt% titanium dioxide zirconium powder, 20 ~
Ground 0.5 ~ 2 hour under 30wt% Citric Acid Mono mixing, room temperature condition, obtain abrasive.
Second step, the Al by 20 ~ 30wt%2(SO4)3·18H2O, 30 ~ 40wt% sodium nitrate, 10 ~ 20wt% cobalt powder, 10
~ 20wt% manganese powder and 20 ~ 30wt% germanium powder are well mixed, compressing under the conditions of 50 ~ 100MPa, in argon gas atmosphere and
It is heat-treated 0.5 ~ 1 hour, crushes, ball milling under the conditions of 400 ~ 500 DEG C, is dried 12 hours under the conditions of 90 DEG C, screening, obtaining granularity is
0.088 ~ 1mm screening material A and granularity are less than 0.088mm screening material B.
3rd step, by 30 ~ 40wt% abrasive, 20 ~ 30wt% screening material A, 20 ~ 30wt% screening material B and 5 ~
10wt% potassium nitrate is well mixed, compressing under the conditions of 10 ~ 30MPa, hot under the conditions of argon gas atmosphere and 400 ~ 500 DEG C
Processing 0.5 ~ 1 hour, produces the ceramic base heat accumulating based on iron tailings.
Ceramic base heat accumulating manufactured in the present embodiment based on iron tailings is after testing：Storage density is more than 800kJ/kg；
Thermal conductivity factor is more than 1.8W/ (mK)；Compressive resistance is more than 20MPa；Thermal shock resistance (1100 DEG C of water coolings)>20 times.
Present embodiment has following good effect compared with prior art：
(1) present embodiment is based on high content phase-change material, composition, formation and the distribution of control structure material,
The high-temperature reactivity of adjustment structure material and phase-change material, thus the obtained ceramic base heat accumulating based on iron tailings have compared with
Big storage density.
(2) present embodiment realizes the micro Distribution of phase-change material using the formation feature of structural material, controls crystallite
Formation state in phase-change material adjusts the heat absorption, accumulation of heat and Heat transfer of material, thus obtained based on iron tailings
Ceramic base heat accumulating has higher thermal conductivity factor.
(3) present embodiment utilizes the pyroreaction characteristic between different material, forms refractoriness height, compressive resistance
Greatly, the matrix material that thermal coefficient of expansion is low and corrosion resistance is high, thus the obtained ceramic base heat accumulating tool based on iron tailings
There are higher compressive resistance and thermal shock resistance.
(4) present embodiment controls preparation process substep according to the structure and performance characteristics of heat accumulating, it is to avoid
Using processes such as high-temperature calcinations, the loss of phase-change material was both prevented, the ingenious control of material structure and performance is realized again.Cause
This, the raw material sources not only used are extensive, and simple production process, production cost are low.
(5) present embodiment solves accumulation occupation of land using iron tailings as one of primary raw material, not only and pollutes asking for environment
Topic, and turn waste into wealth, realize synthetical recovery and the utilization of iron tailings resource；Meanwhile, utilize the oxidation contained in iron tailings
Crystalline phase distribution in silicon, iron oxide, aluminum oxide and other beneficiating ingredients and iron tailings, it is matched with other raw materials
Close, the crystal grain for the distribution that interweaves, thus the obtained ceramic base heat accumulating tool based on iron tailings are formed in heat treatment process
There is higher compressive resistance.
Ceramic base heat accumulating based on iron tailings prepared by present embodiment is after testing：Storage density is more than
800kJ/kg；Thermal conductivity factor is more than 1.8W/ (mK)；Compressive resistance is more than 20MPa；Thermal shock resistance (1100 DEG C of water coolings)>
20 times.
Therefore, the characteristics of present embodiment has wide raw material sources, low production cost and simple technique, it is prepared
Ceramic base heat accumulating storage density based on iron tailings is big, thermal conductivity factor is big, compressive resistance is high and thermal shock resistance is high.
Claims (12)
1. a kind of preparation method of the ceramic base heat accumulating based on iron tailings, it is characterised in that the preparation method is：
The first step, the network by 40 ~ 60wt% iron tailings, 20 ~ 40wt% aluminium salt, 0.1 ~ 10wt% stabilizer and 10 ~ 30wt%
Mixture is mixed, and is ground 0.5 ~ 2 hour under room temperature condition, is produced abrasive；
Second step, by 20 ~ 40wt% aluminium salt, 30 ~ 50wt% inorganic salts, 10 ~ 30wt% cobalt powder, 10 ~ 30wt% manganese powder and
10 ~ 30wt% germanium powder is well mixed, compressing under the conditions of 50 ~ 100MPa, under the conditions of neutral atmosphere and 400 ~ 600 DEG C
Heat treatment 0.5 ~ 3 hour, is crushed, ball milling, is dried 12 hours under the conditions of 90 DEG C, screening, obtains the screening that granularity is 0.088 ~ 1mm
Expect that A and granularity are less than 0.088mm screening material B；
3rd step, by 20 ~ 50wt% abrasive, 10 ~ 30wt% screening material A, 20 ~ 40wt% screening material B and 5 ~ 10wt%
Inorganic salts be well mixed, it is compressing under the conditions of 10 ~ 30MPa, under the conditions of neutral atmosphere and 400 ~ 600 DEG C be heat-treated 0.5 ~
3 hours, produce the ceramic base heat accumulating based on iron tailings.
2. the preparation method of the ceramic base heat accumulating according to claim 1 based on iron tailings, it is characterised in that described
The granularity of iron tailings is less than 0.088mm；The main chemical compositions of the iron tailings are：SiO2Content is 70 ~ 80wt%, Fe2O3Contain
Measure as 8 ~ 15wt%, Al2O3Content is less than 3.5wt%, and CaO content is less than 4wt%.
3. the preparation method of the ceramic base heat accumulating according to claim 1 based on iron tailings, it is characterised in that described
The granularity of aluminium salt is less than 0.045mm；The aluminium salt is Al2(SO4)3·18H2O is Al (NO3)3·9H2O, the aluminium salt it is pure
Degree is more than 99wt%.
4. the preparation method of the ceramic base heat accumulating according to claim 1 based on iron tailings, it is characterised in that described
The granularity of stabilizer is less than 0.01mm；The stabilizer is lanthana powder or is titanium dioxide zirconium powder, the La of the lanthana powder2O3
Content is more than 99wt%, the ZrO of the titanium dioxide zirconium powder2Content is more than 99wt%.
5. the preparation method of the ceramic base heat accumulating according to claim 1 based on iron tailings, it is characterised in that described
Complexing agent is anhydrous oxalic acid or is Citric Acid Mono, and the purity of the complexing agent is more than 99wt%.
6. the preparation method of the ceramic base heat accumulating according to claim 1 based on iron tailings, it is characterised in that described
The granularity of inorganic salts is less than 0.088mm；The inorganic salts are sodium nitrate or are potassium nitrate, and the purity of the inorganic salts is more than
99wt%。
7. the preparation method of the ceramic base heat accumulating according to claim 1 based on iron tailings, it is characterised in that described
The granularity of cobalt powder is less than 0.045mm, and the Co contents of the cobalt powder are more than 99wt%.
8. the preparation method of the ceramic base heat accumulating according to claim 1 based on iron tailings, it is characterised in that described
The granularity of manganese powder is less than 0.088mm, and the Mn contents of the manganese powder are more than 99wt%.
9. the preparation method of the ceramic base heat accumulating according to claim 1 based on iron tailings, it is characterised in that described
The granularity of germanium powder is less than 0.088mm, and the Ge contents of the germanium powder are more than 99wt%.
10. the preparation method of the ceramic base heat accumulating according to claim 1 based on iron tailings, it is characterised in that described
Neutral atmosphere is nitrogen atmosphere or is argon gas atmosphere.
11. the preparation method of the ceramic base heat accumulating according to claim 1 based on iron tailings, it is characterised in that described
Ball milling is：The mass ratio of An Wu Liao ︰ zirconium oxide Mo Qiu ︰ absolute ethyl alcohols is the dispensings of 1 ︰, 10 ︰ 5, is put into ball grinder, in 200r/min
Under conditions of ball milling 12 ~ 15 hours.
12. a kind of ceramic base heat accumulating based on iron tailings, it is characterised in that the ceramic base heat accumulation material based on iron tailings
Material is prepared by the preparation method of the ceramic base heat accumulating based on iron tailings according to any one of claim 1 ~ 11
The ceramic base heat accumulating based on iron tailings.
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| CN110128105A (en) * | 2019-04-04 | 2019-08-16 | 河北工业大学 | Iron tailings based black solar energy heat absorbing ceramics and preparation method thereof |
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| CN102585775A (en) * | 2012-01-20 | 2012-07-18 | 中国科学院过程工程研究所 | High-temperature composite phase change heat storage material and preparation method thereof |
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